Hi folks,
Got myself a Minipro TL866 (incl software Mini Pro V6.50) and I want to burn a .bin file onto five x 27128A Eprom chips.
I order 5 pieces from the same seller:
http://www.ebay.de/itm/401024897502?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AITFour of the eproms went smooth, while one had a strange behavior. When I wanted to burn the .bin file, then I got the following error:
I made a small analyze on the chips:
ID Check/Product Identification:
20 89 = the four working eproms
29 83 = the problem child
Note:First number is: manufacturers code
Second number is: Device code
I don’t understand why the manufacturers code and device code is different from the four working ones. Least not the manufacturers code?
Pictures of the eproms:
Left side = not working chip.
Right side = Working
It’s not easy to see (Sorry, bad quality camera), but there is 100 % same written on them.
Here comes the strange part:• The working one has a
silver colored circuit around the chip and there is a
small knob which is round.
• The not working chip has a
gold colored circuit around the chip and there is a
small knob which is square.
I also tried giving the strange eprom 40 min under Eprom eraser, this was without any effect.
Any ideas or suggestions?